Please note: I recommend using the 12mm wide rail MGN12 over 9mm wide rail MGN9, however with the MGN9 your going to get better prints than the stock v groove wheels, I am still still using the MGN9H on on machine and getting good prints. for MGN12 buildhttps://www.thingiverse.com/thing:6221121 10/04/2023 Update uploaded mount without countersink head holes. counter sunk screws in metal work but in plastic pull into the plastic with enough stress over time. Use a pan head, or socket head, and a washers. for the four m3 screws that mount to the bearing, not countersink head screws (or add a washers to countersink head screws) I made a second design to decrease the PTFE distance, I noticed I get better prints of super soft (83A and lower) you also dont lose as much z axis, but the weight is further forward form the top of the bearing, a 12mm rail wont matter, but a 9mm rail ? I assume not, I am going to switch it out. I put in some m3 hex holes you can thread with bolt till it locks in place then push the nut a little more with 400C soldering iron let it melt in place. V6 mount you can do this or you can use threaded inserts. I made pictures above. I used my V6 bowden to wade screw in plug. the V6 slide on clip to attach dual heatsink fans, and angled cooling part fan, all available in my designs. ender 3 just cut the tab off X axis limit switch tab, (I heard that works) I would recomend a carbon fiber of your choice that can tolerate heat from the bed, . I used Priline CF-PC superhard 238C 70C 25mm/sec no fan, .5 nozzle, .25 layers. I used m3 5mm OD threaded inserts,
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